Sperms could be frozen and stored for various reasons:
⊕ The patient will or is currently undergoing a type of treatment, such as chemotherapy or radiotherapy, that disrupts sperm production.
⊕ The patient has azoospermia or oligospermia, and the sperm is retrieved either by TESA or TESE. In such cases, we will almost always recommend the freezing of the retrieved sperm sample because there is a high risk that a subsequent retrieval process will yield negative results.
In this process, we employ a mix of special solutions and liquid nitrogen. The sperm cells can be indefinitely preserved in this solution.